標題: The Impact of Luminous Properties of Red, Green, and Blue Mini-LEDs on the Color Gamut
作者: Guo, Weijie
Chen, Nan
Lu, Hao
Su, Changwen
Lin, Yue
Chen, Guolong
Lu, Yijun
Zheng, Lili
Peng, Zhangbao
Kuo, Hao-Chung
Lin, Chih-Hao
Wu, Tingzhu
Chen, Zhong
光電工程學系
Department of Photonics
關鍵字: Displays;mini-light-emitting diode (LEDs);color gamut
公開日期: 1-May-2019
摘要: Color gamut is of the paramount importance in the display. Light-current-voltage(L-I-V) characteristics of red, green, and blue flip-chip mini-light-emitting diodes (LEDs) (100 mu m x 200 mu m) are investigated at temperatures similar to the operational temperatures. Both the ideality factor and the temperature dependence of external quantum efficiency (EQE) suggest that the nonradiative loss in red mini-LED is higher. We also illustrate the intensive lateral luminous intensity fluctuation for red mini-LED under the over-driving current by capturing the spatial emission mapping. The influence of temperature and driving current on the chromaticity coordinates of mini-LEDs is determined. Furthermore, we propose a drive-current algorithm to maximize the color gamut of the trichromatic mixed light at different temperatures. The results indicate that, for the application of self-emitting mini-LED displays, the maximum color gamut is more sensitive to green emission, whereas enhancing the radiative recombination in red mini-LED could contribute a lot to the improvement on net performance.
URI: http://dx.doi.org/10.1109/TED.2019.2906321
http://hdl.handle.net/11536/152370
ISSN: 0018-9383
DOI: 10.1109/TED.2019.2906321
期刊: IEEE TRANSACTIONS ON ELECTRON DEVICES
Volume: 66
Issue: 5
起始頁: 2263
結束頁: 2268
Appears in Collections:Articles